Secondary relaxation in ultrastable etoricoxib: evidence of correlation with structural relaxation

Secondary relaxations are fundamental for their impact in the properties of glasses and for their inseparable connection to the structural relaxation. Understanding their density dependence and aging behavior is key to fully address the nature of glasses. Ultrastable glasses establish a new benchmark to study the characteristics of secondary relaxations, since their enthalpy and density Read more about Secondary relaxation in ultrastable etoricoxib: evidence of correlation with structural relaxation[…]

The dielectric signature of glass density

At present, we are witnessing a renewed interest in the properties of densified glasses prepared by isobaric cooling of a liquid at elevated pressure. As high-pressure densification emerges as a promising approach in the development of glasses with customized features, understanding and controlling their unique properties represent a contemporary scientific and technological goal. The results Read more about The dielectric signature of glass density[…]

high pressure

Ultrastable glasses portray similar behaviour to ordinary glasses at high pressure

Vapour deposited ultrastable glasses have gained much attention since its discovery in 2007 by the group of Mark Ediger. By physical vapour deposition, at proper deposition conditions, it is possible to obtain, in just few minutes, glasses with a thermodynamic stability that rivals the stability of glasses naturally aged for millions of years, i.e. ambers. Read more about Ultrastable glasses portray similar behaviour to ordinary glasses at high pressure[…]